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Caution: No CAN Bus communications with Electronic Power Modules (EPM). Some row clutches will not disengage.
Check Connections. A restart is required to attempt communications with EPMs.
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EPM is off line and not communicating with controller.
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Check all connections on EPM that is not communicating.
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See your John Deere dealer.
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Caution: Electronic Power Modules (EPM) are not responding to CAN Bus commands. Some row clutches will not disengage.
Check connections. A restart is required to attempt communications with EPMs.
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EPM has failed to respond to CAN Bus commands.
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Check all harness connections to EPM that is not responding.
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EPMs not active
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Switch failed EPM with known EPM that is functioning and retest.
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See your John Deere dealer.
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Caution: Low Supply Voltage on Electronic Power Modules (EPM). Clutch system self-test not available.
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Voltage has fallen below 10.5 V on any input supply on individual EPM.
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Check EPM fuse.
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Check all harness connections on EPM with low voltage.
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Increase engine speed to increase alternator output.
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See your John Deere dealer.
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| Symptom |
Problem |
Solution |
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Caution: Supply Voltage Out of Range on Electronic Power Modules (EPM). Clutch system self-test not available.
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Voltage has dropped below 9.0 V on any input supply on individual EPM.
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Check EPM fuse.
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Check all harness connections to EPM that has low voltage.
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Increase engine speed to increase alternator output.
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See your John Deere dealer.
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Clutch self-test does not function.
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An EPM is not communicating or voltage feed out of range, and clutch test is not available.
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Check EPM fuse.
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Check harness connections to non responsive EPM.
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Increase engine speed to increase alternator output.
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See your John Deere dealer.
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RowCommand™ row section not visible on display.
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Row section electrical problem.
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Determine which row of the section is at fault. Refer to Diagnostics tab , Tests, Row Clutches. Exchange RowCommand™ row clutch from identified failed row to an operational row. Retest.
Exchange RowCommand™ row unit clutch harness from failed row to an operational row. Retest. Inspect harness from defective row to EPM for loose connections or damage.
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| Symptom |
Problem |
Solution |
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RowCommand™ row sections for rows 1-10 not visible on display.
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EPM not communicating or not active.
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Inspect fuse for EPM 1 (10 amp) on EPM harness.
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Determine if EPM 1 is operational. Refer to Diagnostics tab, Tests, EPM status.
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Inspect harness from EPM to appropriate rows for loose connections or damage.
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Exchange EPM with a functional EPM to verify harness or EPM problem.
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Contact your John Deere dealer.
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Supply voltage out of range.
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Inspect fuse for EPM 1 (10 amp) on EPM harness.
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Determine if EPM 1 is operational. Refer to Diagnostics tab, Tests, EPM status.
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Inspect harness from EPM to appropriate rows for loose connections or damage.
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Exchange EPM with a functional EPM to verify harness or EPM problem.
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Contact your John Deere dealer.
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| Symptom |
Problem |
Solution |
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RowCommand™ row sections for rows 11-20 not visible on display.
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EPM not communicating or not active.
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Inspect fuse for EPM 2 (10 amp) on EPM harness.
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Determine if EPM 2 is operational. Refer to Diagnostics tab, Tests, EPM status.
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Inspect harness from EPM to appropriate rows for loose connections or damage.
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Exchange EPM with a functional EPM to verify harness or EPM problem.
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Contact your John Deere dealer.
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RowCommand™ row sections for rows 21-30 not visible on display.
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EPM not communicating or not active.
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Inspect fuse for EPM 3 (10 amp) on EPM harness.
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Determine if EPM 3 is operational. Refer to Diagnostics tab, Tests, EPM status.
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Inspect harness from EPM to appropriate rows for loose connections or damage.
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Exchange EPM with a functional EPM to verify harness or EPM problem.
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Contact your John Deere dealer.
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| Symptom |
Problem |
Solution |
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RowCommand™ row sections for rows 31-40 not visible on display.
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EPM not communicating or not active.
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Inspect fuse for EPM 4 (10 amp) on EPM harness.
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Determine if EPM 4 is operational. Refer to Diagnostics tab, Tests, EPM status.
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Inspect harness from EPM to appropriate rows for loose connections or damage.
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Exchange EPM with a functional EPM to verify harness or EPM problem.
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Contact your John Deere dealer.
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RowCommand™ row sections for rows 41-48 not visible on display.
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EPM not communicating or not active.
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Inspect fuse for EPM 5 (10 amp) on EPM harness.
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Determine if EPM 5 is operational. Refer to Diagnostics tab, Tests, EPM status.
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Inspect harness from EPM to appropriate rows for loose connections or damage.
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Exchange EPM with a functional EPM to verify harness or EPM problem.
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Contact your John Deere dealer.
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Low voltage warning when all RowCommand™ clutches are powered (meter disengages).
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Excessive electrical load.
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Decrease electrical load.
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Increase engine RPM to increase alternator output.
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Verify that alternator output is within specifications.
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